BIO 2129 Lecture Notes - Lecture 4: Myrmica Rubra, List Of United States National Lakeshores And Seashores, Drug Tolerance
8 Oct 2016
School
Department
Course
Professor
Document Summary
Water cycling: transitory events effects ecosystem function, sometimes with lags. Primary productivity can change over broad geographic area. Decomposition: replenishment of nutrients for primary production- recycling nutrients. Attempted to be answered by cedar creek lter site: draught happened, thought that everything would die off. Then ratio of biomass to before and after draught when diversity is high, areas lose less biomass compared to earlier site. Places with low diversity have low draught resistance. After around 10-12 species, the graph begins to plateau, showing how the buffering effect of increased species begins to decrease: therefore areas with low diversity have very small biomass production, very robust relationship. Generally this applies to all. (diversity in ecological community is proportional to ecosystem function that community creates) Now we have a utilitarian reason to have diversity in ecological systems. (economical reason to conserve species rather than just we like lions ) Estimates of abundance of direct bearing on the legal status of species.
